In the universe, there are three types of galaxy. First one is Dwarf Galaxy. It is a category of smallest galaxy. In this category, many galaxies across only 200 light years. and in this type of galaxies have few millions of stars.

NASA and European scientists recorded a fingerprint of mystery molecule in this galaxy which is known as Diffuse Interstellar Bands (DIBs). It is unsolved nearly 100 years. If this will be solve then we can understand and explain the formation of the planets, stars and life.

The milky way is a galaxy which contains our solar system. Milky way contains a dim glowing band arching across the night sky, so it’s name is ‘milky’. Milky way is a barred spiral galaxy. It’s diameter is approximately 1,00,000 – 1,20,000 light years long.